Theanine (as Suntheanine) 200 mg
100/100
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 100% of ingredients have research evidence
A
Label Compliance Grade
Product Label
Have a supplement label? Find it here.
Upload a photo of any supplement label to search our database of 92,312 products.
Label Data
1 Capsule(s)
Serving Size
60
Servings
Non-Nutrient/Non-Botanical
Product Type
100%
Evidence Coverage
Supplement Facts — Evidence Check
200 mg
📊 Market median: 200.0mg (358 products)
📚 9 studies (Tier A: 0, B: 2)
Other Ingredients
Rice Flour
Vegetable Cellulose
Calcium Palmitate
Label Claims — Verification
❓
All Other
❓
Structure/Function
All Other (99% of products)
Structure/Function (92% of products)
Nutrient (22% of products)
Target Groups
Vegetarian
Adult (18 - 50 Years)
Gluten Free
Dairy Free
Product Information
📋 Directions for Use
Suggested Use: Take 1 capsule daily, preferably between meals, or as directed by your health practitioner.
⚠️ Warnings & Precautions
Caution: If pregnant, nursing, or taking any medications, consult your health practitioner before use.
Discontinue use and consult health practitioner if any adverse reactions occur.
Keep out of reach of children.
Use only if safety seal is intact.
🧪 Formulation Notes
Vegetarian
Gluten free Non-GMO Free of: milk, egg, fish, peanuts, crustacean shellfish, soy, tree nuts, wheat, yeast and gluten. Free of ingredients derived from GMOs.
Store in a cool, dry place.
Additional Information
BPA free
Exclusive Professional Formulas
Product Details
UPC / SKU
8 59782 00615 7
DSLD Entry Date
2021-06-23
Product Type
Non-Nutrient/Non-Botanical
Form
Capsule
DSLD ID
249359
Data Updated
2026-04-11
Research Evidence
37
Research Sources
53
Avg Quality Score
22
Rct
10
Systematic Review
3
Meta Analysis
1
Clinical Trial
1
Openfda Safety
B
Examining the effect of L-theanine on sleep: a systematic review of dietary supplementation trials
B
The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis
B
The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
B
Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
B
The Role of Supplements and Over-the-Counter Products to Improve Sleep in Children: A Systematic Review
B
Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
B
Effect of Alpha-S1-Casein Tryptic Hydrolysate and L-Theanine on Poor Sleep Quality: A Double Blind, Randomized Placebo-Controlled Crossover Trial
B
Effect of L-theanine on selective attention in a traffic-related reaction task in sleep-deprived young adults: a double-blind placebo-controlled, crossover study
Compare Similar Products
L-Theanine
XYMOGEN
100
L-Theanine
XYMOGEN
100
Thea-Zen
HBC Protocols
100
L-Theanine 100 mg
Newflower Farmers Markets
100
L-Theanine 200 mg
Vitamin World
100